User`s manual

Installing under OS/400
TCP/IP AX3000 User's Manual 111
two connections with the same DEVNAME.
This problem can be solved by tuning 'keepalive' function of the OS/400 Telnet
Server. The keepalive function allows sessions to time out. Keepalive probes
are automatically sent by the OS/400 host when a connection has been idle for
a specified time. If the TCP/IP peripheral does not respond, the connection is
dropped. The socket is released and applications associated with the
connection are killed.
Note: to check the status of sockets, use the OS/400 netstat command.
By default, the keepalive time out value is very high (sometimes infinite). So this
value must be decreased to allow the OS/400 to check regularly the TCP/IP
connection status. Invoke the following command to change this value (xxx are
seconds):
===> CHGTELNA TIMMRKTIMO(xxx)
This modification will take effect after restarting the telnet server:
===> ENDTCPSVR SERVER(*TELNET)
===> STRTCPSVR SERVER(*TELNET)
It is recommended that Users are educated to power down the AX3000 in an
orderly manner as described in Chapter 4.4 to avoid this issue arising.
IMPORTANT: using a small keepalive value can prevent routers from dropping
the ISDN line and cause high connection bills.